光敏自组装单层膜用于液晶光控取向的研究

液晶与显示 , 2004, 19(3): 157-162. doi: 10.3969/j.issn.1007-2780.2004.03.001

光敏自组装单层膜用于液晶光控取向的研究

彭增辉 ^1, , 于涛 ^2, , 胡立发 ^3, , 刘永刚 ^4, , 阮圣平 ^5, , 鲁兴海 ^6, , 宣丽 ^7,

基金项目: 吉林省科技厅科研项目(20010579,20020603) 中国科学院知识创新工程项目(Q03M22Z) 国家自然科学基金(19974046,59973020,60277033)

Using a Self-assembled Monolayer with Coumarin Group as Photoalignment Film of Nematic Liquid Crystal

用丁二酸酐和7-羟基香豆素合成了含有脂肪族羧酸基团的光敏化合物,利用脱水反应使它在玻璃(或石英)基板表面形成自组装单层膜.用偏振紫外光照射光敏性自组装膜,与光矢量方向匹配的香豆素基团发生[2+2]周环反应,反应产物沿辐照光的偏振方向分布,形成表面张力各向异性的薄膜.用它作为向列相液晶取向膜制成平行液晶器件,在偏光显微镜下观察,发现取得了均一、稳定的取向效果,并且该取向膜有良好的热稳定性.

参考文献

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光敏自组装单层膜用于液晶光控取向的研究

Using a Self-assembled Monolayer with Coumarin Group as Photoalignment Film of Nematic Liquid Crystal

参考文献